How Much Mulch or Compost Do I Need?
Follow the instructions below to figure out how many cubic yards of compost, mulch or topsoil you need.
Calculate the Area of Your Garden
If you don't yet know the area of your garden, you can use the following site to draw an outline around your garden to get its area. To do this:

Click here to go to the area calculator website (site will open in a new window or tab).

On the site that opens, type in your address in the Search for Location: box.

Zoom in as far as you need so that you can draw an outline around your garden.

Click as many times as you need to outline your garden.

Depending on the size of your screen, you may need to scroll down to see the results.

Find the result in square feet under Output: Current Area, and copy or remember that number

Enter that number in the Area box below.

Follow the rest of the instructions below for finding the cubic yards of material needed
Calculate the Cubic Yards of Mulch, Compost or Topsoil Needed
Use the following form to calculate the cubic yards of material needed for your garden.

If you already know the area of your garden, enter it below. If you need to find the area, follow the instructions above to find it using Google Maps.

Select the depth of material desired from the popup menu

Click the Submit button if necessary

The number of cubic yards of material needed will appear